Mercedes W126 300SD - Defrost On All The Time - FIXED!
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- Опубліковано 6 лют 2020
- #impalamansgarage1
In this video I will show you how to replace the climate control
defrost vacuum actuator. If your defrost is on all of the time, your defrost vacuum actuator is probably bad. The video may also provide you with same basic information on how these actuators work and where some of them are located.
Parts
Behr A/C Vacuum Actuator Part Number: 6208-08001571
Notes: Vacuum Element - Defroster Nozzle Flap
www.partsgeek.com/catalog/198... - Авто та транспорт
I'm very happy that i found this video, there are no information about this problem here in Russia. Thank you man, cheers!
Once again I have the same problem exactly with mine. Thank you very much!
Well that was an informative video
It's great how me and my Sclass can get back at it with little difficulty because you were so kind to do it first.
I'm looking forward to future videoa
Thank you for showing how to do a very important repair. I've had a shop repair this problem twice before. I believe I learned from you how to fix it myself next time. Very clear video. I also like how you share your manual instructions.
Very good video
Foot Actuator is located in center console behind the ashtray. THe actuator sits back slightly below the climate control push button assembly, when you take the wood console off you will see it. The foot actuator looks like a door lock vacuum pod not the pink pods in the upper dash. If you replace that pod it should fix your foot well issues. Also check your air ducts while your at it, sometimes they can come off and the air is just blowing in the dash> I have had that happen to some of my w123s and w126s.
Thanks so much for these good tips sir.
I started digging into it today. Looks like 85 and newer have that different style foot well actuator. This 84 has a pink one.
I can definitely see Mercedes doing that. Some times they just shoved in the part they had lol. I have seen so many mixed and matched parts for 80s cars. Hope you got the air to go where you wanted.
Behr and Hella are still separate companies but they have formed a joint venture in order to produce automotive air-conditioning and engine-cooling system components for the aftermarket. Says they each hold a 50 percent share stake in the venture. So basically they've joined hands to keep some of these hard to find items fresh and available for us into the foreseeable future. Nice of them, as long as their prices will be nice on us... Hey Impalaman, I love your videos man, I'm reviving a W126 81' 300SD hand me down and passed around the familiy since it was brand new almost 40 years ago. However, I'm gonna be the nephew who made the car new again. Thank you so much!
Outstanding. Keep us posted on your.progress!
Thank you big time
good job
I may have to do that. I have the same problem on an '83 300D. Thanks.
I've been looking into ways to rebuild these vacuum pods. Looks more doable than I initially thought. Stay tuned.
Let me know how that works out. When I did my videos, I couldn't find 'em anywhere.
Rebuild parts can be purchased here: www.perfanalysis.com/climate-control/acc-version-ii/
The company's cup type replacement pods for the dual pods DO NOT WORK, unless they have recently modified them, The throw on the actuator is way too short with them. I have heard this from others and I have no idea how they try to sell that failed part!
@@radioman140 I've not purchased any of their products yet.
Do you have a suggestion where I might find instructions on removing the dash from 126 SEC? Thanks for offering so much information. It's entertaining as well! John
When you say "removing the dash"..... what precisely do you mean. Are you wanting to remove the entire dashboard from the vehicle?
Hi...your vedio explanation was perfect...what about the air bag dash?...how can I reach to defrost vacum to check it...I dont have glove box..mine its air bag at passenger side...Regards
I've not done this job on a W126 with an air bag. However you can go here and find the factory service manual for your car to look up procedures: www.startekinfo.com/StarTek/outside/12253/?requestedDocId=12253
Now I forgot what year that is and I believe it's an SD. My 85 300D looked nothing like that. My middle vent stopped working so I took the glove box out. No vacuum pots visible. The one for the middle dash vent flapper is behind it which you can barely reach. It is not a twist in. Oh no, it has 3 screws which you have to take out with a little bitty short screw driver. And wiggle out and reverse that process to install the new one. It took me about a week to get my wrist to go back straight after that but "I won!"
I think that floor vent will give you more trouble like taking the whole dash and and center stack out.
I want to watch that. Get your bleeper ready lol.
I was seriously shocked at how easy it was to remove this vacuum pod.
@@ImpalamansGarage those dam Germans must have decided the s class buyers deserved better engineering than the e class so made your vacuum pots essier to get to lol.
I had to take my glovebox out on my 2001 e320 just to replace the cabin filters. It has 4 screws and then you have to pull up and out cover and all. Tight fit.
You say it won't shut off like it is a problem. Just get in there with someone and do stuff to fog up the windows.
Also would innertube repair kits fix the rubber?
No. The rubber is much thinner than that. There is a company that rebuilds them. I cannot recall the name off hand. A little googling should find it.
Do W116 use the same vacuum actuator? I have the same problem.
Call this company and ask them. They will know. www.perfanalysis.com/
In my 126 - All air goes through all vents, not only from defroster. Is it the same problem?
Probably not. If you look at the owners manual, these cars are designed to send air to most, if not all vents. However under heavy cooling on a hot summer day, the ac should blow over 90 percent of the air from the front vents. There are diagrams in the owners manual showing which vents the air comes from for the various switch settings on the control panel.
@@ImpalamansGaragewe misunderstood each other)) when i press the button that must make blow to the foot - nothing change. The air still blowing to the window/front and foot - not only to foot. In every button air blowing to window/foot and front.
@@rodnoy671 I understand now. This sounds like a problem I also have. There is a vacuum pod behind the center console straight back from the ash tray. It opens and closes the heater door that allows heat to the foot area. In my car, the connecting arm from the vacuum pod to the heater flap is broken. To fix this I believe i have to remove the entire center console. In your car the problem might be with the heater vacuum pod if you are lucky. I discuss this problem in this video: ua-cam.com/video/P7gF6_VNGH8/v-deo.html
@@ImpalamansGarage Thank you very much!!!!
Lucky my R107 has one, you just got to remove the steering wheel and cluster
If you intend to keep this car, here are some of the things you will also find... Apart from things you're already noticing in your other videos. 1) Purchase a spare gas pedal and keep it in the trunk. One day you will need it. 2) If anything starts acting up electrically, take apart the module responsible and re-solder all the large connections. 3) Have a spare OVP relay lying around 4) Keep spare fuses handy, they don't blow they wear out mechanically 5) Blower motor fuse might be a bare metal strip style. These regularly fail mechanically at inconvenient times, replace them with a real fuse socket. 6) These cars leak. Unless you're going to rebuild the motor, be prepared for that. 7) Grease all the moving parts in the doors and the sunroof or expect expensive failures. 8) The Bosch mechanical injectors (gas motor) get dribbly over time. Fixing them or replacing them is often the only way to get rid of rough idle under heat soak conditions. 9) Engines with plastic timing chain rails should have them replaced every 10 years or 100k.
Good tips! Found out why there is no heat in the footwell. I went back into the dash today and found the drivers side footwell flap disconnected from the bar which the vac pod moves. The pass side is still connected. However the drivers side of the cross bar (whatever you call it) was flopping around putting the whole thing in a bind. The pass side would get a little heat but drivers had none. Unless I can figure out how to reconnect the drivers side without tearing out the dash and the heater box I think I will just wrap a little tape around that left hand swing arm so it won't flop around. That way at least the pass side footwell will get full heat. I'm OK with taking the dash and heater box out. I've done this sort of thing before but I'd rather move on to the engine and get everything squared away under the hood before finishing the interior.
@@ImpalamansGarage It's a pretty gnarly dash to pull. Center console has to come with it as does the wheel. Lots of little clips, bowden cables that are hard to re-attach, etc. It'll chew up your knuckles a bit. If you're going in there, best to do all you intend to do at once. Get the little light bulb that feeds the center console too. I went ahead and did the heater core and evap, but if you have working AC I wouldn't bother.
@@hugeshows Made up my mind. The heat and A/C in this car works really well. Going to tape up the drivers end of the footwell flap rod (or whatever term is used), maybe replace the bulb driving the fiber optics (it works fine but at least that will be something that doesn't fail later) and put everything back together. Will fight this battle another day. I'll move on to the engine. Valves, rack damper, leaks, etc ....
@@ImpalamansGarage it is usually not the pod that fails for the driver's side footwell but the nipple on the top of the flap itself which is nested in the plastic articulated (hinged) arm which has a female end in which the nipple rests in. It is a PITA to fix, but after securing the flap, I used JB Weld let it cure for an hour and moved the flap manually every so often so it wouldn't set up and freeze the whole mechanism. In this manner you fashion a makeshift joint. Mine has held up for well over two years, knock on wood. Quarters are tight but you will figure out how the arm works and with radio, hvac and switches panel removed it is doable if you are VERY persistent
Wow that's tits easy repair I thought you had to pull the dash before this lol
So on my vehicle no matter what button I hit on the climate control my car just shuts off???
Stop using the climate control !
You mean the engine shuts off? If you do you must have an electrical short in there somewhere.
@@wernerdanler2742 Not sure I understand your question. Possibly something I said in the video was confusing.
@@ImpalamansGarage Are you referring to what I said about the electrical short? That was in reference to what mrjohny said about his car shuting off. I don't remember anything else I asked and don't see anything else in my comments.
@@wernerdanler2742 Disregard. Got my commenters mixed up. lol
8 in total. $&@!? GERMANS!!